Description
A vulnerability in open-webui/open-webui version 0.3.8 allows an attacker with a user-level account to perform a session fixation attack. The session cookie for all users is set with the default `SameSite=Lax` and does not have the `Secure` flag enabled, allowing the session cookie to be sent over HTTP to a cross-origin domain. An attacker can exploit this by embedding a malicious markdown image in a chat, which, when viewed by an administrator, sends the admin's session cookie to the attacker's server. This can lead to a stealthy administrator account takeover, potentially resulting in remote code execution (RCE) due to the elevated privileges of administrator accounts.
Published: 2025-03-20
Score: 9.0 Critical
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2025-6956 A vulnerability in open-webui/open-webui version 0.3.8 allows an attacker with a user-level account to perform a session fixation attack. The session cookie for all users is set with the default `SameSite=Lax` and does not have the `Secure` flag enabled, allowing the session cookie to be sent over HTTP to a cross-origin domain. An attacker can exploit this by embedding a malicious markdown image in a chat, which, when viewed by an administrator, sends the admin's session cookie to the attacker's server. This can lead to a stealthy administrator account takeover, potentially resulting in remote code execution (RCE) due to the elevated privileges of administrator accounts.
Github GHSA Github GHSA GHSA-43g4-487m-5q6m Open WebUI Vulnerable to a Session Fixation Attack
History

Tue, 01 Apr 2025 21:00:00 +0000

Type Values Removed Values Added
First Time appeared Openwebui
Openwebui open Webui
CPEs cpe:2.3:a:openwebui:open_webui:0.3.8:*:*:*:*:*:*:*
Vendors & Products Openwebui
Openwebui open Webui
Metrics cvssV3_1

{'score': 9.0, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H'}

Thu, 20 Mar 2025 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Thu, 20 Mar 2025 10:15:00 +0000

Type Values Removed Values Added
Description A vulnerability in open-webui/open-webui version 0.3.8 allows an attacker with a user-level account to perform a session fixation attack. The session cookie for all users is set with the default `SameSite=Lax` and does not have the `Secure` flag enabled, allowing the session cookie to be sent over HTTP to a cross-origin domain. An attacker can exploit this by embedding a malicious markdown image in a chat, which, when viewed by an administrator, sends the admin's session cookie to the attacker's server. This can lead to a stealthy administrator account takeover, potentially resulting in remote code execution (RCE) due to the elevated privileges of administrator accounts.
Title Session Fixation in open-webui/open-webui
Weaknesses CWE-79
References
Metrics cvssV3_0

{'score': 7.6, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N'}

Subscriptions

Openwebui Open Webui
cve-icon MITRE

Status: PUBLISHED

Assigner: @huntr_ai

Published:

Updated: 2025-03-20T13:16:31.805Z

Reserved: 2024-07-23T19:34:05.033Z

Link: CVE-2024-7053

cve-icon Vulnrichment

Updated: 2025-03-20T13:16:19.654Z

cve-icon NVD

Status : Analyzed

Published: 2025-03-20T10:15:36.217

Modified: 2025-04-01T20:33:49.153

Link: CVE-2024-7053

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses